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Unread 10-27-2011, 11:22 AM   #31
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Default Re: Herky Jerky 2008 Precedent

Shadowman,.... I hear you and I respect your experience. The precedent seems to be much harder to work on and get at things,..like the motor connections, speed sensor, controller, OBC, than the 1996 CC I had. It always seems to come down to "Time" which I don't have plenty of. I'll start on all of the connections. The 1996 had one rear cover and once you got it off you had access to the controller connections, motor, etc.
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Unread 10-27-2011, 01:31 PM   #32
The Last Moja Morani
 
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Default Re: Herky Jerky 2008 Precedent

yeah they are different just keep an open mind if your doing something that your gut says hey just maybe even though the tools say different might want to go with that gut feeling.............................if the M-cor is ok on this cart maybe go after the speed sensor i can see that doing the herky-jerky........................
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Unread 10-27-2011, 09:21 PM   #33
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Default Re: Herky Jerky 2008 Precedent

I want to correct my earlier comments about the CC Precedent being hard to service. I know I'm getting old when I walk into the John and forget why I went there. Anyway, weeks ago I had take off the rear cover of the CC which is in the Golf Bag holder area. Once the cover is off there is 100% access to all connetions with the motor. Anyway, while I was there I verified all connections were solid. No problem there. Now I need to know how to take the cover off of the controller to check all the cable connections there. I have the Illustrated Parts catalog but that just shows everything exploded. Aslo, I took the floor cover off and got at the MCOR connections. I use Q Tips and Isopropyl Alcohol to clean the contacts and made sure they had a solid connection. At this point and did not want to remove the MCOR cause I'm having my daughter and son-in-law up for a golfing weekend so we need the cart. It still runs rather good at full speed.
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Unread 10-29-2011, 12:53 AM   #34
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Default Re: Herky Jerky 2008 Precedent

OK,..The good news is that the Cart seems to be back to 90% functional. At least the occurance of the Herky-Gerky pulse has pretty much dissapearedd at middle to top speed. Only see it a few times durning initial slow petal push. Now you ask,...what did I do to fix it. The bad news is,.. " I don't know". As I mentioned in my last post I had cleaned the MCOR contacts. I also checked all the connections to the motor and twisted the wires to make sure they were tight. I also did the same to the speed sensor cover. I also moved and tightened all of the battery connections with a wrench. After that I recharged the batteries overnight. This morning I took it out to play golf and was very suprised to find that it worked just fine all day, plus I had a passenger. If it happens again I will be a little smarter and only work on one thing at a time and test it again. Hopefully this will show me what the fix was.
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Unread 10-29-2011, 06:56 AM   #35
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Default Re: Herky Jerky 2008 Precedent

glad you got it going. Hit em long and straight!!
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Unread 11-01-2011, 03:30 PM   #36
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Default Re: Herky Jerky 2008 Precedent

I thought I had the problem solved but what really happend is the batteries finally got up to a decent charge and over powered the problem. I think I've solved the Problem but I still have to confirm the answer. I now know that the problem is the brakes. They are set so tight they are not only dragging on the drum,..they are tight enough to stop most movement. I had posted another problem that I thought I was having with the TOW/RUN switch, as when everything was off, including the tow/run switch, I could not get the cart to move by hand. This not only resolves the problem with the tow/run,.. it also solves the other post I have made about Herky-Jerky. All this time the brakes have been causing the herky-jerky problem especially when trying to drive at slow speed. The drum are worn out of round which is typical of most drums and as the shoes hit the high spot the brakes slow the cart down. As you drive you get the effect of "Herky-Jerky,... Laugh out Loud (LOL). I'll update my other post. By the way, my local Cart Tech set the speed function and it is wrong and he adjusted the brakes,... and they are wrong. Maybe I should ask for my money back and get someone else to do the job. Trouble is,...now I know enough about the brakes to do that myself. I wonder if this will also fix my speed problelm. We will see.
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Unread 11-01-2011, 07:56 PM   #37
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Default Re: Herky Jerky 2008 Precedent

Quote:
Originally Posted by trigger1937 View Post
I thought I had the problem solved but what really happend is the batteries finally got up to a decent charge and over powered the problem. I think I've solved the Problem but I still have to confirm the answer. I now know that the problem is the brakes. They are set so tight they are not only dragging on the drum,..they are tight enough to stop most movement. I had posted another problem that I thought I was having with the TOW/RUN switch, as when everything was off, including the tow/run switch, I could not get the cart to move by hand. This not only resolves the problem with the tow/run,.. it also solves the other post I have made about Herky-Jerky. All this time the brakes have been causing the herky-jerky problem especially when trying to drive at slow speed. The drum are worn out of round which is typical of most drums and as the shoes hit the high spot the brakes slow the cart down. As you drive you get the effect of "Herky-Jerky,... Laugh out Loud (LOL). I'll update my other post. By the way, my local Cart Tech set the speed function and it is wrong and he adjusted the brakes,... and they are wrong. Maybe I should ask for my money back and get someone else to do the job. Trouble is,...now I know enough about the brakes to do that myself. I wonder if this will also fix my speed problelm. We will see.
yeah if the brakes are that bad it should take care of speed issue also............................
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Unread 11-01-2011, 11:45 PM   #38
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Default Re: Herky Jerky 2008 Precedent

Shadowman,... your are right,.. all along the symtoms were telling me what the problem was,...but because it was too simple I went looking for more complex answers. I guress we are accepting that the world around us is so complex we can't figure it out,.. we should search for the simple answers first.
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Unread 11-02-2011, 08:07 AM   #39
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Default Re: Herky Jerky 2008 Precedent

always the basics 1st........always..............................gla d you got it figgered out........................
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Unread 11-04-2011, 11:52 PM   #40
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Default Re: Herky Jerky 2008 Precedent

OK,..Final answer.... I pulled up the flooring today thinking all I had to do was adjust the back pull bar of the rear brakes and this would take the tension off of the brakes,..so I did that. Then I tried to move the cart,...NO GO... I could not even budge it an inch. So I jacked up the rear and tried to turn the wheel,...NO GO. I pulled the tire and the drum,..which was very difficult as it was tight as could be. After inspection it was clear the brakes had been manually adjusted up to tight and the passenger side drum was just full of brake dust. Once I got both drums off I spun the hub to check the transaxle and it rotated fine without any noise or bumps. I backed off the brakes a couple of notches and put them back on. I did not have to adjust the brake petal since it was correct to start with. This eliminated the Tow problem and now I can move the cart at will. Putting it all back together it drove fine but did not really change the top speed. In talking with the dealer he indicated they see a lot of "Brake Lock" because the brakes get off center and are so tight against the hub that they do not "Self Center". He gave me a entire process to fix the brakes and add some lithium grease between the shoes and the hub. He also indicated they have seen several adjusting mechanisum sease up. So now I have even more work to do.
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